- 行业: Mining
- Number of terms: 33118
- Number of blossaries: 0
- Company Profile:
The U.S. Bureau of Mines (USBM) was the primary United States Government agency conducting scientific research and disseminating information on the extraction, processing, use, and conservation of mineral resources.
Founded on May 16, 1910, through the Organic Act (Public Law 179), USBM's missions ...
A test in which material is subjected to an increasing tensile pull until it fractures. A stress-strain curve may be plotted, and the limit of proportionality, proof stress, yield point, ultimate tensile stress, elongation, and reduction in area can be determined.
Industry:Mining
A test in which organic matter in soil is destroyed by oxidizing agents and the loss measured. This test is used in preparation of soil for a sedimentation test, and gives an indication of the amount of organic matter present.
Industry:Mining
A test in which the volume change in a soil sample is observed when subjected to increasing increments of load. A soil sample, which may be 3 in (7.6 cm) in diameter and 0.8 in (2 cm) thick, is compressed between two porous stones, and the movement under load is noted.
Industry:Mining
A test of resistance to deformation of metals or minerals in which a pyramid-shaped diamond is forced into a polished surface of the specimen to be tested under various static loads. The result is a function of the average length of the diagonals of the resulting indentation. Compare: Tukon hardness test; Brinell hardness test.
Industry:Mining
A test on the steel used for rivets, in which a bar is bent through 180 degrees ; if any cracks are formed, the steel is rejected.
Industry:Mining
A test that determines the flammability of explosives brought into contact with flame or heat.
Industry:Mining
A test to determine contained quantity of uranium. The actual uranium present may be more or less than the assay shows.
Industry:Mining
A test to determine the deviation of a well from the vertical, employing an instrument known as a Totco.
Industry:Mining
